Admiral Mike Mullen promises Prime Minister Yousuf Raza Gilani and Pakistan that the U.S. will 'respect its sovereignty...' Islamabad objects to cross-border strikes and protested against a bloody helicopter-borne ground assault by U.S. commandos in South Waziristan. There have been five U.S. missile strikes in the month of Sept, killing militants and civilians. U.S. President George W. Bush approved the U.S. commando assault in South Waziristan on Sept. 3 without Islamabad's permission as part of a presidential order on covert operations. Army commander Kayani said Pakistan's territory would be defended at all cost and aggression across the border would be confronted. Pakistani security officials said firing by Pakistani troops forced two U.S. military helicopters to turn back to Afghanistan after they crossed into Pakistani territory, although the U.S. and Pakistani militaries denied it. Pentagon officials in Washington said that America had forewarned Pakistan of the attack. Reports have speculated that Pakistan has secretly agreed to allow America to launch missile strikes on foreign fighters in its tribal areas. Pakistan's new president, Asif Ali Zardari, said he did not believe the United States would carry out more raids.